Griffiths-like phase in the three-dimensional ±J Edwards-Anderson spin-glass model

M. LETICIA RUBIO PUZZO; F. ROMÁ; S. BUSTINGORRY; P. M. GLEISER

http://arxiv.org

Cornell University Library- Los Alamos National Lab

Año: 2009 p. 1 - 4

Using information of the ground state topology and the damage spreading technique we show a Griffiths-like phase is present in the three-dimensional $pm J$ Edwards-Anderson spin glass model. With spin-flipping dynamics damage spreads for temperatures larger than $T_{mathrm{g}}$, the glass transition temperature. With spin-orienting dynamics and for temperatures in $T_{mathrm{g}} < T < T_{mathrm{d}}$, damage spreads over a finite region of the system, composed of finite clusters of ferromagnetic character. $T_{mathrm{d}}$ is the spin-orienting damage critical temperature, which is of the same order as the critical temperature of the ferromagnetic Ising model, $T_{mathrm{c}}$. The present results allow us to identify the clusters which originate the Griffiths-like phase in the present model.